Yellow dye and process of making.



position corresponding Thefollowingexam lewillservetoill Heat together, in a UNITED STATES PATENT OFFICE.

ERNST IUBBENEGGBB, 0F LUDWIGBHAF EH-OH-THE-BHINE, GERMANY, ABBIGNOE T0 BADISOHE mm 0' sons rum, o1- tunw esnsrsn-owrns-nmnn,

GERMANY, A GORPOBA'IION.

YELLOW DYE AND PROCESS OF MAKING.

Ho Drawing.

To whom it may concern: 4

Be it known that I, Enns'r Fpssnnneonn, doctor of philosophy and chemist, subject of the Emperor of Aust a-Hungary, JOSIdHIg at Ludwigshafen-on-the-lthine, Germany,

have invented new and usefullnigizvements m Yellow es and Pro of liiiig the Same, of which the following is a specification.

{have discovered that b treating 3-'chlor- G-mtranflin with fo matter can obtained which is suitable for use as a p1gment, or lake, the colorlbeing a beautiful yellow with a greenish. tinge'and being fast a ainst the action of light, lime,

water, and a cohol .1 a

My new coloring matter possesses a comto the formula It difficultlgnsoluble in alcohol easily soluble m hot xy e, and melts at about further the nature 0 this invention andliow it can be earned into ractical effect, but the invention is not to this example.

closed ate temel id y aiming V Sp cifi ti n of Letters Patent; Patented Aug. 24, 1909. Lmfllcatlon fled April 15, 1909; isellll No. 190,115.

hty, degrees perature of from seventy, to ei ree hundred centi grade, and while stirring, t and orty-five parts by weight of a ten per cent; aste ofB-chlor-fi-nitranilin, and thirt Harts y weight of a thirty per cent. forma ehyde solution. When, from a. test portion, it is seen that no diaz'otizable base is present, theiqproductisfiltered off and washed.

ow what I claim is:

l.- The process of producing colorin matter by treating 3-chlor-6-nitranilin wit maldcliyde.

2. Asa new article of manufacture, the coloring matter which can be obtained by treatin 3achlor-6-nitranilin with 7 formaldehyde w 'ch coloring matter possesses a beautiful yellow color with a greenish tin e, is difiicultly soluble in alcoho easil forhot xylene,

:0: v i J. Ame LLOYD,

- I Joe. H. Len-rs.

the mixture is allowed to cool andereunto set 

